Improvement in molds for the manufacture of tubular or hollow articles of glassware



Ni'rnn STATES.

WAsniNe'roN'nEcK, or PITTSBURG, PENNsrriviiivni,i-

i lmPli'ovvt'MENT N Moins "Flos THE MANuFAcTusE'oF TUBuL-Aaos, Hollow 1Minute-Y: oF eLAsswARE'. l

f specification fonning'pft cf' Letters Patent N. 196,326-, asado-caber 23, 1811 application mea Aprl 9,1877. I

To all 'whom tmay' concern." l'

Beit known that I,.WASH1NGT0N Vof Pittsburg, county of Allegheny, Stateofv Pennsylvania, have invented or discovered a new and useful Improvement: in the Man- V xufacture of Glassware; and I do hereby Y declare the following to be a full, clear, concise,'and exact description thereof, reference l beinghad to the 'accompanying drawing,inak-v ing apart of this-specification, in which-like letters indicating-like partsv Figure l is a sectional view of a mold and plimger (in elevation) illustrative of my in vention. lFig. 2, by a like view of. a detached port-ion, fiuther illustrates the operation iu-A volved. Flg. 3 isa side view of the mold-- base,fsho'wi1ig the lock,.presentlj lo bede- A scribed ,and Figzd shows-the' product and-'rei sults.

- l\1I`\ in\-ention relates to a mode of making ,v holes in glass, by passing' a plunger or maw p ,drel through the molten glass, seas to cut out'- of. the glass a section or portion corresponding tothe size andsliape of the hole desired,

"ices may be devised suitable for carrying out this foperation, I have shown and will describe the construction andoperation of a mold'andi plunger whichl now believe to be .the best for the purpose, in the manufacture f glass- -i wareopen at the top, where4 the plimger is introduced,.and having. an opening' below such as may-be desired.

- The base. or. bottom partB-fof' the mold-is v made"hollow, Its topplate b is ot the usual form, -suitable for the centering thereon of a' tuvo-part or solid mold, l), such as maybe desir'ed, sc as to give-a cavity-3d', between its walls. andthe face of 'the plunger P, The lower en dj of the plunger is made of the shape.

of thehole to 'be made, or of the piece, p, to be cutout, anda. hole off-corresponding size, and in lineftlierewith, is made' in the plated), and this hole is filled with a movablezdie, a, soarranged that when upas.fin-Fg. 1,- its upper face will be about even with thefadjacent walls of t-he cavityd, but so, 'that vit, may by.

pressure be forced; down,as in Fig. 2, adistance equal to the 'thicknesxnf the piece, 'p,to becutont.. It is supported oitorced up by aA spring, a', 'ofany convenient constructiomor by a counter-weight, or by thehand' of the' workman, orby other known means. .W'ith the addition' of the usual lring plate R, the l mold is ready for use; l.

Untilthe devices come to the position shown in .Fi g. l, the operation is such :as is well known inthe 'art of pressing'glassware, As thepressure is continued, the', power,l acting from the plunger V,through the layer of glass .inclo'sedin the space 3, between --the lower ,ende of the plunger P andthe upper end ofthfef n'u5val) 1 kA die a, muses ythe latter to b'e' depressed below the level ofits surrounding-l adjacent walls, the sprin'gu' .yielding for the purpose.- This vmotion is continued until the devicescome'l into the position shown in fliig." 2', with the lower endof the plunger down toor below v the walls of thecavity d, immediately around the vhole vin which the die 'a' moves, by ,whichi means the piece glassjpv is cut out, and a hole',1.fn, of corresponding size and shape, is

-made through the bottom of the glass article u, as shown in Fig-.4; and thesiz'e and fol-1n l of the piece cutout, and the size and' forni orl l sha-peof the hole, may be varied at pleasure by properly. shaping the lower end of the plunger, the hole in the plate b, and the die a. The articlelz-receives itsl shape, and, is .made l in other respects, in theV manner well known inthe art; 'and this inode of making holes in of allkiids and shapes by making 'thecavity (Vandthe other .parts to correspond, and

among others I may enumerate vclock-frames, decanters, pump-cylinders, gas-burners, shades and 'gg-lobes, business-cards, medallions, oilers, buttons, &c.

B y this 'modeofl operation am enabled to make, by the-operationof pressing, many articles which heretofore, on account of the conig paative-thinness of the product, could be` 'made successfully only by blowing, or by hand, orby the two combined.

'I have also found it important in'many cases .-to prevent.- the' piece p from being brought 2 j los, cee

back to the placefrom which it was cut when the plunger 1s withdrawn. This may he accomphshed m various Ways; but, pretcrably, l

use a self-locking lever, c, which is pivoied atA el to the movable die a, fulcrumed at c2, and projects with its handle or free end e outside the box B. This handle may be weighted, if se preferred, so as to obviate the necessity of using the spring a'. On the outside of the bor:` B, and.l in suitable position, I pivot a swinging hook, c, preferably weighted by a handle, e', so that when the die (t is up and the handle ci is down, the hook e will not engagethe handle; but when the die a is depressed, as above described, the handle c3, being thereby raised, will be engaged by thc hook e and held up. `The result will be that i the plunger can be withdrawn, and the pressed glass article n canl be removed wit-hout danger of the cut-,out piece p adhering to it, after which the hook e lis knocked loose, and the 'die @coming lip, throws out the piece p, and

the devices-are then again ready for use.

'I have described this as a inode of making holes in glass.I It may also be employed for Y cutting out sections of glass for various purl poses, tlie piece ent out then being the useful product'.

Substantially the same inode of cutting out -glass sections, or making holes in glass, is

involved in a plunger passing outside a pair olf movable diesgvliich shall inclose Jthe layer f ,ofglas's to be cut out; but the construction of 'such an apparatus will constitute the subjectmatter of one or more separateapplications. 4Iam aware that glass has been blown or pressed around stationary inandrels 1n making holes; also, that moving mandrels have beenprojected into the body of glass, so as to displace the glass laterally, and leave forward ofthe end of the mandrel only a thin film of glass, which was easily broken away to complete the hole; but l am not aware of any prior pert'orating, punching, or cutting out of the body otmolten glass by a movingl plungcroperating in combination with a movable die or mandrel.

l claim herein as myinventiony A l. The mode ofperforating glass by cutting out a part or section ofthe molten glass While inclosed between two moving surfaces, and carrying it out of contact with the glass from P'hich it is cut or severed, substantially as set orth.

2. ln combination with the inovablebottoml of aglass-mold yielding to excessive plungerpressruc, a plunger having a range of motion through the space occupied previous to pressing bythe molten glass, substantially as set forth.

3. A movable bottom of a glass-mold, held up as against the phmger-pressure by a slm-ing or cquixf'alent weight, arran ged to be depressed on a continuation or increase of the plungerpressure, in combination with a lock to hold it in a depressedpositiontill the 'article pressed is solidin'ed or removed, such movable bottom and plunger having a range of motion beyond or outside of the pressingravity, substanti ally as set forth.'

Al. The mode of making glass articles by cutting them out of a body of molten or plastic glass between a moving die and plunger working through the walls inclosing the movable die, substantially as set forth.`

ln testimony whereof I have hereunto sei :my hand. .f

WAsrnnGroN BECK. 

